Category Archives: Enrollment Survey

The Enrollment Survey is completed by all twin pairs to enroll in the Washington State Twin Registry. Twins are asked to provide their cotwin’s contact information on the survey. This allows us to invite their cotwin to participate as well. The survey provides researchers with basic health information which they can use to publish papers, apply for grants, and recruit for studies.

The survey has evolved over the years. New questions that may be of interest to researchers have been added. Questions which do not provide researchers with the best information have been changed or removed. For example, the first Enrollment Survey, which was sent out from 2002-2007, included a question about race that only allowed respondents to choose one answer and included Hispanic/Latino as a race option. This question was updated in 2007 to reflect current NIH & US Census guidelines for reporting race and ethnicity. It now allows respondents to choose more than one answer and to report ethnicity (Hispanic/Latino) separately.

Examination of Cross-Sectional Associations of Neighborhood Deprivation and Alcohol Outlet Density With Hazardous Drinking Using a Twin Design.

Rhew IC, Kosterman R, Duncan GE, Mair C.

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Education in Twins and Their Parents Across Birth Cohorts Over 100 years: An Individual-Level Pooled Analysis of 42-Twin Cohorts.

Silventoinen K, Jelenkovic A, Hopper JL, Busjahn A, Cozen W, Mack TM, Sumathipala A, Harris JR, Goldberg JH, Harden KP, Duncan GE, Buchwald D, Turkheimer E, Kaprio J, et al.

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Cross-sectional association between soda consumption and body mass index in a community-based sample of twins.

Eney AE, Tsang S, Delaney JA, Turkheimer E, Duncan GE.

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Differences in genetic and environmental variation in adult body mass index by sex, age, time period, and region: an individual-based pooled analysis of 40 twin cohorts.

Silventoinen K, Jelenkovic A, Cozen W, Mack T, Sumathipala A, Christensen K, Busjahn A, Duncan GE, Buchwald D, Goldberg JH, Hopper JL, Sung J, Turkheimer E, Kaprio J, et al.

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Neighborhood walkability moderates the association between low back pain and physical activity: A co-twin control study.

Zadro JR, Shirley D, Pinheiro MB, Bauman A, Duncan GE, Ferreira PH.

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Does the sex of one’s co-twin affect height and BMI in adulthood? A study of dizygotic adult twins from 31 cohorts.

Bogl LH, Jelenkovic A, Christensen K, Cozen W, Mack TM, Duncan GE, Buchwald D, Hopper JL, Silventoinen K, Kaprio J, et al.

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Neighborhood deprivation and depression in adult twins: genetics and gene×environment interaction.

Strachan E, Duncan G, Horn E, Turkheimer E.

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The CODATwins Project: The Cohort Description of Collaborative Project of Development of Anthropometrical Measures in Twins to Study Macro-Environmental Variation in Genetic and Environmental Effects on Anthropometric Traits.

Silventoinen K, Craig JM, Sumathipala A, Harden KP, Cozen W, Mack TM, Hopper JL, Duncan GE, Buchwald D, Sung J, Harris JR, Busjahn A, Goldberg JH, Kaprio J, et al.

Continue reading The CODATwins Project: The Cohort Description of Collaborative Project of Development of Anthropometrical Measures in Twins to Study Macro-Environmental Variation in Genetic and Environmental Effects on Anthropometric Traits.